Reply to "New motor, coolant temp creeps up between 195 & gets close to 230"

an Illustration I made from info found online of dimensions implies the thermostat has to open about 0.15" to block off the recirculation flow.   during that initial opening, some flow also goes to the radiator.   the thermostat needs to open about 0.25" for the RS333 area to equal the tube area for minimun restriction.RS333

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